PIEZO FILTERS
SURFACE MOUNTED CHIP PIEZOELECTRIC CERAMICS FILTERS
FOR AM APPLICATIONS
CFUCG, SFGCG, SFPC, CFWC 455kHz
Along with the development of the AM chip filter, IF filters
for AM radios have also been made smaller, thinner and in
a chip configuration for surface mounting. This is one more
example of Murata Electronics’ leadership in converting
conventional electronic components to chip technology.
PRELIMINARY SPECIFICATIONS
SMD 455kHz
Center Frequency
Bandwidth (Total)
Ripple (max.)
Group Delay (max.)
____________________________________________________________ *Insertion Stop Band _________________ Source
Loss
Atten. (min.)
And Load
Nom.
Tol.
3dB (min.) 6dB (min.) 40dB (max.)
Point of
Point of Impedance
at ± 100kHz
S
dB Measure (max.)
(kHz) ± (kHz)
(kHz)
(kHz)
(kHz)
Measure
dB
dB
(Ohms)
Part
Number
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
455
1.5
1.5
1
1.5
1
1
2.0
1.5
1.5
1
1
1.5
1.5
1
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
21 to 26
18 to 22
15
12
9
12
9
6
35
30
25
20
15
15
12
9
6
—
—
30
25
20
30
25
20
80
70
60
50
40
30
25
20
18
—
—
1.5
1.5
1.5
1
1
1
1
1
1
1
1
—
—
—
—
0.5
0.5
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
±10.5
±9
6
6
6
6
6
7
4
5
6
7
8
6
6
6
6
6
6
27
27
25
27
25
25
25
25
25
23
23
27
27
25
25
50
50
—
—
—
25
25
25
15
15
15
20
20
—
—
—
—
27
27
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
±10.5
±9
1500
1500
1500
1500
1500
1500
1000
1000
1000
1500
1500
1500
1500
1500
2000
1000
1000
PIEZO FILTERS
CFUCG455E-TC
CFUCG455F-TC
CFUCG455G-TC
CFUCG455FX-TC
CFUCG455GX-TC
CFUCG455HX-TC
SFGCG455AX-TC
SFGCG455BX-TC
SFGCG455CX-TC
SFGCG455DX-TC
SFGCG455EX-TC
SFPC455E-TC01
SFPC455F-TC01
SFPC455G-TC01
SFPC455H-TC01
CFWC455CZ-TC
CFWC455CZ2-TC
SFPC
DIMENSIONS: mm
CFUCG/SFGCG
CO.5
1.0 ± 0.1 1.0 ± 0.1
ባ
7.5 ቢ
ቤ
max.
6.5
ቢ: INPUT
ባ: OUTPUT
ቤ: GROUND
7.0
4.0
max.
1.0
4.0
7.5
50D
*
ቢባቤ
8.4
max.
5.0 max.
3.0
1.0
6.0
3.0
1.2 ± 0.1
Sealing
1.5
1.5
Sealing
1.5
0.9 ± 0.1
2.0
2.0
Sealing
1.5
1.6
SPECIFICATIONS
CFWC
TEST CIRCUIT
E4
6.5
•
*
7.5 max.
* : EIA-J Monthly Code
R1
CFWC455 Series
Input Marking
1.2 ± 0.1
Sealing
1.2 ± 0.1
3.0 5.5 3.0
11.5
3.0
max.
1.5 ± 0.3
C0.3
1.2 ± 0.1
1.2 ± 0.1
1.5 ± 0.3
5.5
Sealing
Rg
S.S.G.
0 dBm
E1
R2
E2
R.F.
Voltmeter
3.0
ቢ: INPUT
ባ: OUTPUT
ቤ ብ: GROUND
Body Color: Cream
Tolerance without notice: ±0.3 mm
(in mm)
Rg + R1 = Input/Output Impedance
Connection
ቢ: INPUT
ባ: OUTPUT
ቤ ብ: GROUND
*Note: For safety purposes, connect the output of filters to the IF amplifier through a DC blocking capacitor. Avoid applying a direct current to the output of ceramic filters.
CG01-J
437
